Drawing traverse



Dec. 26, 1939. w. F. LEE 2,184,717

' DRAWING TRAVERSE Filed July 6, 1939 2 Sheets-Sheet 1 a I I; 1

INV EN TOR.

' wi/eeia/vw 5r 24w Q4 BY ATTORNEY Dec. 26, 1939. w LEE 2,184,717

DRAWING TRAVERSE Filed July 6, 1959 2' Sheets-Sheet 2 /g m 4 45' 2 //l7////Alii7//IIIlV///A II v INVENTOR.

-- A TTORNEY Patented Dec. 26, 1939 William Franklin Lee, Glendale, S. 0.

Application July 6, 1939, 'Serial No. 283,109

1 Claim.

My invention relates to a traverse motion for cotton drawing machines.

An important object is to provide a traverse bar for use on a drawing frame to eliminate grooving of the cork and leather rolls and to provide a smooth and better roving.

A further object is toprovide means for insuring even wear over the drawing rolls of the drawing frame.

A still further object is to provide a simple traverse bar assembly which may be attached to any drawing frame.

Another object is 'to provide a novel power 7 take-01f connection for the operation of the 15 traverse bar.

A still further object is to provide a novel guide arrangement for the traverse bar.

Qther objects and advantages will be apparent during the course of the following description.

In the accompanying drawings forming a part of this application like numerals are employed to designate like parts throughout the same.

Figure 1 shows a top plan view, partly broken away of the drawing frame and the associated traverse bar, the movement of the bar being indicated by the arrows.

Figure 2 is a fragmentary top plan view of the drawing rollers and the traverse bar, the traverse bar having been moved in the direction of the full arrow.

Figure 3 is a fragmentary vertical cross section of a conventional drawing frame and showing the traverse bar attached thereon and the power take-ofi therefor.

Figure 4 is a fragmentary front elevational .view of the traverse bar and its associated parts carried by the drawing frame and taken on the line 4-4 of Figure 3.

Figure 5 is a section on the line 55 of Figure 3.

Figure 6 is a sectional view of the guide arrangement for the traverse bar, and;

Figure '7 is a modification thereof.

In the drawings wherein for the purpose of illustration is shown a preferred embodiment of the invention the numeral 8 designates a conventional cotton drawing frame comprising the usual drawing rolls, the lower rolls 9 being of metal and the upper ones In of cork or leather.

The numeral H indicates the usual straps or stirrups which are hooked over the trunnions l2 at the end of the top rolls ID for carrying the suspended weights l3 which apply the pressure for holding the top rolls bearing on the sliver drawing across the bottom rolls.

The usual sliver can is partially shown at M and I5 indicates the sliver. A number of slivers are taken from the cans l4 there being one can to each set of rollers, and after being passed through the drawing rollers 9 and ID are combined and delivered by a coiler into another can not shown.

Further details of the drawing frame include the fixed guides l6 carried on the end of the frame, the feed rolls l1 and I1 a shelf or apron plate I8, having openings l9 therein through which spoons 20 extend. These spoons are arranged to engage respective slivers between the feed rolls H, I? and the traverse bar 2|.

My improvement resides in this traverse bar 15 and its associated parts, the other parts as above set forth being merely conventional parts of a drawing machine and elaborate detailed description of the operation thereof is believed to be immaterial.

In drawing machines of this kind a great deal of trouble results from grooving of the leather or cork drawing rolls I!) which necessitates the frequent replacement or rebufiing thereof. To obviate such replacements and to provide a better spun yarn and better roving I provide the drawing machine with a reciprocating traverse bar which carries the sliver back and forth over the rolls with resulting even wear of the rollers.

My invention includes a novel power take-off means for operating the traverse bar and such power means is indicated at 22 which is the usual shaft for operating the coiler in machinery of this nature. Fastened to this vertical coiler shaft is a worm 23. The numeral 24 indicates a rotary shaft arranged across said frame and supported by brackets 25, 25 which are suitably attached a to the frame at 26, 26'. The shaft 24 is provided with a gear 21 which meshes with the worm 23.

At the opposite end of the rotary shaft 24 is fixed a drive wheel 28 to which is connected a drive arm 29. This drive arm is pivotably connected to an adjustable drive pin 30 which fits in a slot 3| in the drive wheel 28.

A drive lever 32 is pivotably connected to the 45 arm 29 at 33 by a suitable fastening and is further provided With apertures 34 for adjustment purposes. This lever is pivoted at 35 to theframe piece 26. To the upper end of the lever 32 is fixed a pin or stud 36.

The shelf or plate 18 terminates at 3'! and this provides, as clearly shown in Figure 6, a guide or backing for the traverse bar 2|. An L-shaped bracket 38 is adjustably secured to the underside of the plate I8 and held by the bolts 39 or other suitable fastening means which fit through apertures 40 in the bracket 38.

As will be apparent the L-shaped bracket fits against the bar 2| and serves as a guide member whereby the bar 2| may move back and forth between this member and the plate l8.

In the modification in Figure 7 two L-shaped members 4| and 42 are shown which serves as a guide bearing for the bar 2|. This guide is used on certain types of frames when it is necessary to adjust the bar closer to the rollers 9 and Ill and when the plate l8 cannot serve as one element of the guide. It is noted that one of the L-shaped members 42 is smaller than the other, this one being arranged on the larger one so as to form evenly arranged upright portions.

The traverse bar 2| is provided with the usual sliver guides 43 having the teeth 43; the guides being fastened at 44, 44 to the bar. At 45 is shown an adjustable yoke bearing having a longitudinal slot 46 therein. This yoke is fastened to the bar by bolts 41 which fit in the transverse slot 48 in the yoke to permit adjustment thereof. The pin 36 fits in the longitudinal slot 46 and movement of the lever 32 causes the bar 2| to move bark and forth.

In the operation of the machine the slivers pass through the stationary guides I6, the spoons 20 to the guide teeth 43, then through the rollers 9 and H] to a coiler. As the machine operates the coiler is rotated by the vertical shaft 22 which in turn operates the bar 2l through the gears 23 and 27 causing rotation of the shaft 24. This operates the lever 32 through the drive wheel 28 and arm 29 providing a back and forth movement to the arm 32. Since the arm 32 is connected to the yoke 45 by the pin 36 the traverse bar is accordingly provided with a simple reciprocating movement and as the slivers pass through the guide teeth 43' to the rollers 9 and ID, the slivers are made to move from one end of the rollers to the other. This provides an even wear on the rollers and prevents the grooving thereof. Before this improvement the rolls wore only in the center thereof causing grooves therein and subsequent bad work. Frequent replacements and rebufiing of the rolls were necessary and the reciprocating traverse motion obviates this.

To vary the lengthwise movement of the bar 2| adjustment may be had through medium of the apertures 34 in the lever 32.

The brackets 38, 4!, 42 may be of any desired length. In the drawing they are of one piece and extend throughout the length of the shelf plate l8 and areprovided with an opening 49 to permit the connection of the yoke 45 to the arm 32 for the operation of the bar.

If desired a plurality of smaller brackets may be used and these spaced at suitable points along the shelf l8. If such is the case openings 49 will not be necessary, the brackets being spaced sufficiently apart to permit the connection of the yoke to the arm.

It is to be understood that the form of my invention herewith shown and described is to be taken as a preferred embodiment of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of my invention and the scope of the subjoined claim.

Having thus described my invention, what I claim is:

In combination with 'a drawing machine having drawing rollers and a sliver coiler shaft, a reciprocating traverse bar arranged adjacent the drawing rollers, means for operating said bar to prevent grooving of the rollers, said means operable from a take-off on the sliver coiler shaft and comprising a worm secured to said shaft, a transverse shaft connected to the drawing frame and geared to the worm, a drive wheel carried at the opposite end of said transverse shaft, a drive arm pivotally connected to said drive wheel, a drive lever pivotally connected to said drive arm, said drive lever pivotally connected to the drawing frame, and connecting means for said traverse bar with said drive lever.

WILLIAM FRANKLIN LEE. 

